The JDS Porsche SharkTuners for the Porsche 928
allow the optimization of the fuel and ignition maps
to ensure optimum performance from the engine. This is particularly important if
the engine has been modified in any way e.g. change of exhaust system,
supercharger. The original SharkTuner Mk1 connected via a "ribbon cable" to the ECU
for 85+ cars, the new SharkTuner-2 replaces the original ROM's with programmable
memory modules ("PEM's") and connects via the diagnostic connector for 87+ cars.
This page covers the SharkTuner-2, for info on the SharkTuner Mk1 see
this page. Complete information on the
SharkTuner family is available on the
JDSPorsche website.

The SharkTuner-2 is a hardware interface between the LH ECU (fuel injection
computer) and/or the EZK ECU (ignition computer) and a laptop computer.
Programmable memories (PEM's) replace the factory ROM chips, a slave
microcontroller in the SharkTuner acts as an interface between a laptop computer and
the ECU's, and a custom Windows program running in the laptop provides access to
both the LH and EZK ECU's for real-time diagnostics, adjustments, and data
logging. For tuning, a wideband-O2 (WBO2) sensor is required to provide a
measurement of the air/fuel ratio (AFR). The SharkTuner is powered by the diagnostic connector fitted to all
87+ 928s, the WBO2 can be powered from the factory NBO2 sensor connector or a
specially-wired connection.

Sirius Cybernetics LLC (Jim Corenman) is an agent for JDSPorsche for SharkTuner sales and support for the Americas, Australia and
Asia. (For sales in the Mideast and Europe, contact JDSPorsche at
info@jdsporsche.com). We are also the
developers of the Sharkplotter software,
which allows post-processing SharkTuner log files to update fuel and ignition
maps-- no longer do you need to drive with one hand on the keyboard and the
other on the wheel.

Sharktuner 2 complete with a connecting
cable for '87+ (S4 and later) 928's, and one set of PEM's (programmable memory
modules) is $990.00 plus shipping (see below). This, and a WBO2 sensor/controller, are all
you need to tune and diagnose the LH and EZK.

Extra PEM programmable memory modules for 87+ cars are $100/ea,
one each required for the LH and EZK.

PEM's can be supplied pre-loaded for S4, GT or GTS (please specify) and can
be installed without a Sharktuner, to make your car "Sharktuner-Ready". We are
also developing a line of "Performance PEM's", which are pre-tuned for those who
want to plug-and-go. These provide enhanced performance out of the box, and are
"Sharktuner Ready" as a base for further tweaking.

New!!! We have also done some
introduction and how-to video's which are available on youtube,
click here

Shipping options: A SharkTuner-2 with PEM's and
cables can ship within the US in a medium Priority Mail flat-rate box for $23, including
insurance. One or two PEM's can ship in a small Priority Mail flat-rate box for
$7.50 with insurance. We can also ship Express Mail, UPS or Fedex with delivery
as quick as your pocketbook is deep, or overseas via Post or courier as you
desire. Send an email to:
sharktuner@siriuscyber.net with your requirements and we'll
be happy to help.

Every SharkTuner purchase also includes our award-winning
"Sharkplotter" software, which provides a
powerful tool for reviewing and processing log files. Now you can tune by just
driving around!

And please read the manual
first, it will make everything much more clear!

Happy tuning!

Jim

To order a
Sharktuner, either send an email with your details, or use our handy shopping
cart below. Standard shipping is via Priority Mail, if you need it
quicker/slower be sure to send us an
email with your requirements, and of course additional charges may apply.